Cable clamp



May 5, 1931. I c. E. JENSEN 1,803,619

I CABLE CLAMP Filed April 28, 1930 TTU A/EW Patented May 5, 1931 UNITED STATES PATENT O E CHARLES E. JENSEN, or PORTLAND, OREGON, irssiemnos oNE-HAIZF To A; H. wrin i- V m, or PORTLAND, OREGON Application filed April 28,

This invention relates generally to the use of wire cables, and particularly to a cable clamp whereby an object may be securely fastened to the bight of a line.

The main object of this invention is to provide a special form of cable clamp whereby a block or other object may be movably fastened to the bight of a line.

The second object is to so construct the clamp that its use will in no way cause undue wear or injury to the supporting cable.

The third object is to so construct the clamp that its grip on the line will increase with the load supported by the clamp;

The fourth object is to so construct the clamp that it will be a simple matter to free it from the line and to hold it in the manner which will permit its being moved manu-. ally or by power to a new position.

The fifth obj ect'i-s to so construct the clamp that its holding action will not be aifected by any change in the direction of pull.

These, and other objects, will become more apparent from the specification following or illustrated in the accompanying drawing, in which:

Figure 1 is a perspective view showing a loading operation in which logs are being placed upon railroad cars.

Figure 2 is a side view of the clamp.

Figure 3 is a section taken along the line 3-3 in Figure 2.

Figure 4c is a perspective view of the wedge for holding the clamp in a sliding position.

Similar numbers of reference refer to similar parts throughout the several views.

In order to illustrate this invention there is shown a log loading operation including a spar tree 10 which is held by a number of guy lines 11 to the stumps 12. To two of the guylines 11 are attached the clamps 13 which I am about to describe, from which clamps are suspended the'blocks 1 1 through which pass the log handling lines 15 which are operated by the drum 16 of the donkey engine 17. The lines 15 have attached to their ends the grapples 18 by means of, which the logs 19 are picked up and placed onthe trucks 20 resting on the track 21.

Referring directly to the invention which fios'sibil CABLE CHAMP? 1930. Serial No: 448,063.

is the. clamp lg, same will, be seen to consist of a longitudinal grobvea line e ga ng member to which is attached a pair' 'f io'rkgd ape-ratingarms 22 w ose, reared sides straddle-the clamp 13 and are hinged thefeto by means of the pins 231. names the forked sides of the aims 22am placed the gable grippin jaw s24 which, are" secured to the arms zaby'meaasoith p ns 252" j 5 The aws; 2.4 are provided with a s "red face 26 and tlieclamp 13iSI rovid mug. ,g'r v'e 27 which isprffabl rdafided atifijs nds to avoid formingmt q' short liii'ilis the cable 11, The j ws 24 have 6 auj eentfaces 28 the notoheis 2 into which 'ma beiasertd the edgs ao qr o it; the pur ose if Holding fthtwo' aws 2 4 as: :fa-r as is n cessary to, fr' je the table 1 liffor moving purposes. W Betpveen the forked sides of the. arias 22 are the, .tru

7o ns32 flirb iw fp e the belt at ass" but" 34 tightened wh n the claniipi's' suitably] positionedto p ofsame bgebfiiingfrie 1, the

ma is suddenly'i a va ran; at; clas '5? l ig1i ter operations the bolt (ante replaced a which" can be hooked petventhe t nniens'ez loathe purpose of the jaws 24 to a clamping positi ,110 the closed'end 350g one arm 22 is a a he'd la blo c'lr36' around which pa e He Q d re i i P nh h is attached by means of a clef 38 to th'eiid 3 9 of, the second arm-,, 0bviously",] any load applied to t lie able ag willt d to, draw the arm ends" 3531161 39 to ether 'vfv' ith'th'e degrees]? severity prpportio'nal to the load. t isd'e ifiable 011i en arger si'z 'es aria-lamp to ,iovidean eye 401ffor'the purpose of at,- ft'aching acalble :41 whose" function it is w as s i'st i man ging clamp along? the liiie audio holditonslopesuntila load can be imposed o th clamp. It will be undefstood'that it ,ijnofighe' com dn practice to sosupport the blocks, the difficulty that the move 9 menepe'rmiadjt theublock icaiisesa rapid ear on ,tlieffcable and the ultimate destriie non theietf. '7 4 With the device above described it'is' pas; sibleto securely positionthe block at any-J desired point from which it cannot move until such movement is permitted.

It will also be clear that the movement between the ends 35 and 39 can be accomplished by means of a pair of links or chains attached to those members and then joined to each other at a point where the cable 37 is attached, but it is thought that the arrangement described is preferable in most cases.

I claim:

1. A cable clamp having in combination a longitudinal clamp member adapted to ride upon a cable, a pair of arms hinged to said clamp member, a cable gripping shoe hinged to each arm on the under side of said clamp member and a load supporting cable attached to the ends of said arms whereby a load supported thereby will draw said arms toward each other and force said cable gripping shoes toward said clamp member.

2. A cable clamp consisting of a longitudinal clamp member adapted to ride on the top side of a cable, a pair of shoes movable with relation to each other and to said clamp member adapted to bear against the under side of the cable, a lever arm between each shoe and the clamp member, a load supporting means suspended by the lower ends of said lever members adapted to draw same toward each other for the purpose of urging said shoes toward said clamp member, and means for holding said levers in a cable gripping position.

3. In a cable clamp the combination of a longitudinal grooved clamp member adapted to ride on a cable, a pair of cable gripping shoes on the under side of the cable, a pair of lever arms each of which has one end hinged to said clamp member and its mid section hinged to one of said shoes, a cable and pulley attached to the opposite ends of said arms for drawing the lower ends of same to ward each other to a cable gripping position, and a bolt secured across the lower ends of said arms for preventing the separation thereof when a load is suddenly removed therefrom.

4. The combination of an elongated grooved clamp member adapted to ride on one side of a cable, a pair of shoes adapted to bear against the opposite side of said cable, a pair of arms hinged to opposite ends of said clamp and hinged at their mid sections to'said shoes, the hinges for said shoes lying closer together than the hinges to said clamp, means for holding said shoes apart for the purpose of freeing the cable, means for drawing said arms to a cable gripping position when a weight is supported thereby, and a bolt across said arms adapted to hold same in the position to which they are moved by said weight supporting member.

CHARLES E. JENSEN. 

